Glue clamp



' Sept. 26, 1944. MlLLER 2,359,235

GLUEYYCLAMP Filed March 6, 1943 INVENTOR.

BY fiLkQflk Patented Sept. 26, 1944 UNITED STATES PATENT OFFICE GLUE CLAMP Robert H. Miller, Brisbane, Calif.

Application March 6, 1943, Serial No. 478,248

1 Claim.

This invention relates to improvements in glue clamps and has particular reference to a clamp for use in glueing boards together in edge to edge relation.

The principal object of this invention is to provide a glue clamp which is readily adjustable to accommodate the clamping of boards of various widths so as to make a unit structure of the boards being clamped.

A further object is to produce a device of this character which is economical tomanufacture, simple to use and readily transportable.

A further object is to produce a device wherein the various units may be assembled in vertical relation so as to accommodate stacking of glued units in a minimum amount of space.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawing forming a part of this specification and in which like numerals are employed to designate like parts throughout the same, i

Fig. I is a side elevation of my device ing the same in use. v

Fig. II isa. top plan view of Fig. I.

show- Fig. III is an enlarged detail cross-sectional view taken on the line 33 of Fig. I.

Fig. IV is an enlarged detail cross-sectional view taken on the line 4 4 of Fig. I.

It is often necessary to glue together several boards in order to make a unit structure of greater width than the boards being used; therefore, inorder to get close union between the contacting surfaces of the boards forming the unit, it is necessary to plane the boards, then apply glue thereto and to compress the boards one against the other so that the glued surfaces are in intimate contact and so held during the drying period.

My device is of such a nature that it will accommodate these boards irrespective of their widths within the limits of the device and is so adjustable that it automatically accommodates itself to the total width of the boards being assembled and holds the boards against slippage after compresison within the clamp.

In the accompanying drawing wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numerals 5 and 6 designate a pair of spaced bars each having a T head, as shown at l and 8 respectively.

These bars are held in alignment with each other by an H shaped spacer 9, through which tively, which have pointed noses I9,

compression plate I2, which is adapted to contact the edge of one of the boards forming the unit structure. In the drawings this board is designated by the letter A. The other boards forming the structure are designated by the letters B and C, these boards lying between the bars 5 and 6.

slidably mounted between the bars 5 and 6 is a link I3, to which is pivotally attached pressure plates [4 and I6. These pressure plates each carry integral wing members I1 and I8 respec- The pivotal connection between the link 13 and the pressure plates is so arranged that when the pressure plates tend to move into alignment the noses I9 will bite into the bars 5 and 6, thus locking movement of the pressure plates with relation to the bars.

As a result of this structure when glued boards are placed between the bars 5 and 6, and the pressure plates moved against one side of the boards, then by turning the threaded member H, the compression plate [2 will tend to compress the boards one against the other, for the reason that the pressure plates l4 and IE will pivot on the link 13, and the noses [9 will bite into the bars 5 and 6, thus preventing movement of said pressure plates longitudinally along the bars, and as a result ,a very tight joint will be effected between the contacting boards.

If it is desired to stack several devices, the

' top bar 5 may serve as the next bar in the unit Having thus described my invention, I claim: 7

A glue-clamp for gluing boards together in edge to edge relation comprising a pair of spaced bars having T.-heads, an H-shaped spacer positioned between said bars at corresponding ends and engaging said heads, said H-shaped spacer carrying a threaded member having a compression plate slidably positioned between said bars, and an adjustable clamping member compasses a threaded member II, which carries a prising a link freely positioned between said bars and spaced from said compresison plate, a pair of pressure plates pivotally connected to said link with the plates respectively located on opposite sides of said bars, each of said plates carrying a. pair of laterally extending wing members rigid with the pressure plates and overlapping said bars, the wing members, each having a nose projecting from its inner end adapted to bite into the sides of said bars whereby when said pressure plates are moved toward alignment with each other by operation of said threaded member, the noses will grip said bars to prevent movement of said link and said pressure plates longitudinally of said bars.

ROBERT H. MILLER. 

